Final answer:
Judging other nations by how they match American norms is called ethnocentrism, which is evaluating another culture using one's own cultural standards and often thinking one's own culture is superior.
Step-by-step explanation:
Judging other countries and cultures on the basis of how 'they live up to or imitate American practices and values' is known as ethnocentrism. The term ethnocentrism involves evaluating and judging another culture based on one's own cultural norms, often with the belief that one's own culture is better than all others. As this compares to the concept of cultural relativism, which involves assessing a culture by its own standards rather than those of another culture, it is clear that ethnocentrism carries the connotation of bias and a lack of cultural understanding.
Xenocentrism is the opposite of ethnocentrism and refers to the belief that another culture is superior to one's own. It is also different from xenophobia, which is an irrational fear or hatred of another culture. Understanding these concepts is essential for fostering cultural sensitivity and appreciation.